GraphDrawing: nodes=coordinate

[pgf-tikz-bot]

Migrated from SourceForge
Author: jolx
Timestamp: 2014-06-01 10:02:44.364000

Hi,

I seem to have stumbled on a bug in your GraphDrawing library. If you want to draw a graph with interconnected nodes, I thought of using nodes with no size such as coordinates. This doesn't seem to work as shown in the example below.

This was tested using v3.0.0 of pgf/TikZ; however, it seems like it used to work in the past as indicated at http://tex.stackexchange.com/questions/86588.

\documentclass[tikz]{standalone}

\usetikzlibrary{
    graphdrawing,
    graphs
}

\usegdlibrary{
    force
}

\begin{document}

\begin{tikzpicture}
    \graph [spring layout, nodes={coordinate}] { 1--2--3--4--5--1 };
\end{tikzpicture}

\end{document}

The relevant error is:

! LuaTeX error ...graphdrawing/lua/pgf/gd/interface/InterfaceToDisplay.lua:213: 
...t/tex/generic/pgf/graphdrawing/lua/pgf/gd/model/Path.lua:704: memoization tab
le filled incorrectly
stack traceback:
	[C]: in function 'assert'
	...graphdrawing/lua/pgf/gd/interface/InterfaceToDisplay.lua:213: in function 'r
esumeGraphDrawingCoroutine'
	...graphdrawing/lua/pgf/gd/interface/InterfaceToDisplay.lua:182: in function 'r
unGraphDrawingAlgorithm'
	[string "\directlua "]:1: in main chunk.
\pgfgdendscope ...lay.runGraphDrawingAlgorithm() }
                                                   \endgroup \directlua {pgf...
l.15 ...ut, nodes={coordinate}] { 1--2--3--4--5--1 }
                                                  ;

[pgf-tikz-bot]

Migrated from SourceForge
Author: s1lentst0rm
Timestamp: 2014-10-13 10:59:32.571000

I think I have the same problem. In the following code snippet the "cross out" shape causes problems:

\documentclass[tikz,border=0pt]{standalone}
\usetikzlibrary{graphdrawing}
\usetikzlibrary{graphs}
\usegdlibrary{trees}
\usetikzlibrary{arrows.meta}
\usetikzlibrary{shapes.misc}

\begin{document}
\tikzset{cross/.style={cross out, draw=black, minimum size=2*(#1-\pgflinewidth), inner sep=0pt, outer sep=0pt},
%default radius will be 1pt.
cross/.default={1pt}}

\begin{tikzpicture}[user/.style={circle},key/.style={rectangle,rounded corners=3pt},every node/.style={gray,draw,inner sep=-3pt,minimum height=22pt, minimum width=22pt,key}, ren/.style={black,very thick}, sym/.style={very thick, Triangle-}]
\graph [edges={dashed}, tree layout, math nodes, grow=down, level distance=0.55in, sibling distance=0.1in]
{
K_O^[ren] --[sym] {
K_M -- {
K_I -- {
K_A -- {
[nodes=user] U_1, U_2
},
K_B -- {
[nodes=user] U_3, U_4
}
},
K_J -- {
K_C -- {
[nodes=user] U_5, U_6
},
K_D -- {
[nodes=user] U_7, U_8
}
}
},
K_N^[ren] --[sym] {
K_K^[ren] --[sym] {
K_E -- {
[nodes=user] U_9, U_{10}
},
K_F^[ren] --[white] {
U_{11}[user,cross out]
},
K_F^* --[sym] {
U_{12}[user,black]
}
},
K_L -- {
K_G -- {
[nodes=user] U_{13}, U_{14}
},
K_H -- {
[nodes=user] U_{15}, U_{16}
}
}
}
}
};
\end{tikzpicture}
\end{document}

%%% Local Variables:
%%% mode: latex
%%% TeX-engine: luatex
%%% End:

ERROR: LuaTeX error ...graphdrawing/lua/pgf/gd/interface/InterfaceToDisplay.lua:213:

--- TeX said ---
...9/tex/generic/pgf/graphdrawing/lua/pgf/gd/model/Path.lua:704: memoization tab
le filled incorrectly
stack traceback:
[C]: in function 'assert'
...graphdrawing/lua/pgf/gd/interface/InterfaceToDisplay.lua:213: in function 'r
esumeGraphDrawingCoroutine'
...graphdrawing/lua/pgf/gd/interface/InterfaceToDisplay.lua:182: in function 'r
unGraphDrawingAlgorithm'
[string "\directlua "]:1: in main chunk.
\pgfgdendscope ...lay.runGraphDrawingAlgorithm() }
\endgroup \directlua {pgf...
l.57 }
;
--- HELP ---
From the .log file...

The lua interpreter ran into a problem, so the
remainder of this lua chunk will be ignored.

[pgf-tikz-bot]

Migrated from SourceForge
Author: jolx
Timestamp: 2015-08-17 13:31:28.468000

This bug can be fixed (or at least, temporarily circumvented) with the following patch:

--- a/generic/pgf/graphdrawing/lua/pgf/gd/interface/InterfaceToDisplay.lua
+++ b/generic/pgf/graphdrawing/lua/pgf/gd/interface/InterfaceToDisplay.lua
@@ -263,6 +263,13 @@ end

 function InterfaceToDisplay.createVertex(name, shape, path, height, binding_infos, anchors)

+  -- The path should never be empty, so we create a trivial path in the provided
+  -- path is empty.  This occurs with the `coordinate` shape for example.
+  if #path == 0 then
+    path:appendMoveto(0, 0)
+    path:appendClosepath()
+  end
+
   -- Setup
   local scope = InterfaceCore.topScope()
   local binding = InterfaceCore.binding

[pgf-tikz-bot]

Migrated from SourceForge
Author: cfeuersaenger
Timestamp: 2015-11-28 21:20:03.144000

• status: open --> closed-duplicate

[pgf-tikz-bot]

Migrated from SourceForge
Author: cfeuersaenger
Timestamp: 2015-11-28 21:20:03.309000

The issue has been fixed in the meantime.